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Questions and Answers : GPU applications : System must only use GPU

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ElDiablo
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Message 1029628 - Posted: 30 Aug 2010, 7:32:11 UTC
Last modified: 30 Aug 2010, 7:32:53 UTC

Hi, I have a problem while running seti@home on the cpu, the cooling of the system isn't very efficient:

k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp: +89.0°C
Core0 Temp: +102.0°C
Core1 Temp: +83.0°C
Core1 Temp: +92.0°C

so what I want to do is to set it up to only use the GPU for processing. It's got an nVidia GT250 that's currenlt not being used, so I want to give it something to do.

What settings to I need to change in order to use cuda on this system? And what do I need to change to disable cpu usage completely or just a bit?

To help it run a bit cooler I've changed <cpu_usage_limit>50.000000</cpu_usage_limit>
. Does this affect the GPU aswell? I want to use 100% of the GPU...

also, it doesn't seem to actually download and run cuda workunits, is there something that I need to do in order to get cuda running with seti?

I'm running Ubuntu server 10.04 with no gui
Any help would be appreciated

Profile Gundolf Jahn
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Message 1029630 - Posted: 30 Aug 2010, 7:44:22 UTC - in response to Message 1029628.

From Message 1029408:

Seti doesn't have a CUDA app for Linux. You'd have to use a third party app for that, and the only one I know of is one by Crunch3r, but for 64bit Linux only.

Gruß,
Gundolf
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Computer sind nicht alles im Leben. (Kleiner Scherz)

SETI@home classic workunits 3,758
SETI@home classic CPU time 66,520 hours

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Message 1029631 - Posted: 30 Aug 2010, 7:47:28 UTC - in response to Message 1029628.

With temperatures like that, I'd first open the case and check for dust. Clean out all dust out of fans and heat sinks. Next I'd check if the fans are actually spinning.

Alternatively, get a new CPU fan, as the original one may not be up to the case. And even if you managed to get the GPU working, don't you think that one will heat up? All GTX GPUs heat up considerably when they're doing CUDA work. Adequate cooling is a must.
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ElDiablo
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Message 1029633 - Posted: 30 Aug 2010, 8:19:17 UTC

I've upgraded the cooling to a Coolermaster copper-base cooler and the system runs around 70'C under heavy load in windows, so I'm not sure if lm-sensors may be giving me incorrect values in linux. If I reboot and check the temps in the bios it's around 40'C, but then again, there's no cpu load in the bios screen.

Where can I get the linux app by Crunch3r?

ElDiablo
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Message 1030389 - Posted: 3 Sep 2010, 6:39:54 UTC

bump

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Message 1030390 - Posted: 3 Sep 2010, 6:47:42 UTC - in response to Message 1029633.

I've upgraded the cooling to a Coolermaster copper-base cooler and the system runs around 70'C under heavy load in windows, so I'm not sure if lm-sensors may be giving me incorrect values in linux. If I reboot and check the temps in the bios it's around 40'C, but then again, there's no cpu load in the bios screen.

What kind of CPU is this (we can't check, since you have your computers hidden)?
Did you apply some thermal paste between the CPU and the heat sink of the new fan? Did you clean off all the old gunk before you applied the new thermal paste? Did you clean out all dust bunnies while you were in there?

Where can I get the linux app by Crunch3r?

From his site. Now, I don't know how well you can use internet search engines, but by just filling his name in like that in Google, I found his site in 0.34 seconds. Which is a lot faster than waiting 5 days for someone to come answer that question.

Anyway: http://calbe.dw70.de/linux64.html
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ElDiablo
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Message 1030406 - Posted: 3 Sep 2010, 8:47:15 UTC - in response to Message 1030390.

The computers aren't hidden anymore, you should be able to see it now.
The computer in question is an AMD Athlon 5400+ BE, It comes without a heat-sink and fan in the box, I've used thermaltake arctic silver thermalpaste (not too much, only enough to spread across the cpu when the heatsink is attached. Like I said, the readings in windows never goes above 70'C and that's using OCCT's power supply test, usually with boinc it will run about 60'C to 65'C, and that's acceptable. I don't think linux is reading these temperatures correctly.


Thank you for your reply regarding Crunch3r's app, I did a google search but could only find forums with people talking about this app, but no direct links to his app.

Questions and Answers : GPU applications : System must only use GPU

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